_Cynthia's Dragon-yoke_ (Vol. v., p. 297.).--For the satisfaction of
your Boston correspondent H. T. P., I have been unable to find anything
but the following note from Bishop Newton's edition of Milton's works:--
"Dragon-yoke.--This office is attributed to dragons on account of
their watchfulness."
So Shakspeare, in _Cymbeline_, Act II. Sc. 2.:
"Swift, swift, you _dragons_ of the night."
And in _Troilus and Cressida_, Act V. Sc. 14.:
"The _dragon_ wing of night o'erspreads the earth."
Milton has somewhat of the same thought again in his Latin poem, _In
Obitum Præsulis Eliensis_:
"Longeque sub pedibus deam
Vidi triformem, dum coercebat suos
Frænis _dracones_ aureis."